https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89735
--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> --- (gdb) p obj $3 = {{{fieldA = 0 '\000', fieldB = 0 '\000', fieldC = 0 '\000'}, _complete = 2}} (gdb) p &obj $4 = (runnable.S186 *) 0xf8d0268c (gdb) x/x 0xf8d0268c 0xf8d0268c: 0x00000002 Looks like endian issue.